CheckOff is a task management application that runs as a stand alone application or a menu bar app.
Features:

* Your choice: runs in a menu bar mode so that your dock doesn't get cluttered up, or as a normal application
* Tasks can be placed within folders, and have labels attached to each task
* Tasks can have notes with plain text or rich text with fonts, colors, and sizes
* Notes can also contain links to websites or local files, allowing one click access to resources that can be used to complete the task
* Tasks can be exported to HTML, OPML, Plain Text and RTF
* Menu bar icon color can be customized.
* Hot key support to open the main window.

Do It is a small application to manage categorized to do lists. Each to
do item can be linked with a file on your computer, a URL, such as the
address of a website, or a contact from your address book. The linked
item can be opened directly from the Do It window. To do items can also
include notes, priorities and deadlines, which can be set as reminders
in iCal.

Task management shouldn't be your full time job. We've built OmniFocus
to take a load off your mind by managing your tasks the way that you
want, freeing you to focus your attention on the things that matter to
you most. Finish that novel. Spend more time with your friends and
family. Grow your business. Let us worry about keeping your goals and
tasks, both personal and professional, in one ordered, easy to access
system that you can depend on.

Make lists and get organized. TaskPaper is a plain text to-do list
that’s surprisingly adept. Buy now and start getting things done!
Text editor with outlining power. TaskPaper feels like a plain text
editor, but it is backed by a powerful outliner.

2Do lets you take a completely different approach to managing your
tasks. With its extremely simple-to-use interface and a comprehensive
and flexible set of powerful features, it lets you focus on what's most
important to you: your life. There is no wrong way of using 2Do, and
unlike other to-do apps, it won't force you in adhering to a particular
task management methodology.